Lubrication



NOV. 7, '1933. 1 BUUR 1,933,582

LUBRICATION Filed Sept. l2. 1929 3 Sheets-Sheet l TTC.

INVENTOR J BYose/n z al' /7/ ATTORNEYS NOV. 7, J. BUUR LUBRICATION Filed Sept. 12, 1929 5 Sheets-Sheet 2 ifi/5 AT ORNEYS raienied Nov. 7, 1933 1 A 11,933,582

UNITED STATES PATENT OFFICE LUBRIoATIoN Joseph Bijur, New York, N. Y., assigner to Auto Research Corporation, a corporation of Delaware Application september 12, i929 serial No. 392,048

35 Claims. (Cl. 267--54) My present invention is capable of a wider Thus the inner element of the bearing which range oi applicability although concerned priis attached to the load will transmit ,such load marily with shackles oi the character employed through the bottom of its encircling complemento connect a vehicle body to its supporting springs tary member to the rigid structure part of the and with the lubrication of such shackles. shackle and such part in turn will transmit the 60 Such shackles ordinarily include a substanload through the inner element of the other tially rigid structure part having spaced Vhoribearing to the bottom of its complementary outer zontal swivel bearing connections with the load element which is fixed to the support.

(chassis frame) and the load support (shock Preferably one bearing is supplied with oil by lf3 absorbing spring) respectively, the shackle overflow from the other. In the case of tapered 65 whether ci the tension or compression type, bearings which are self-adjusting to accommoserving as a load transmitting `element to movdate. for wear and which are substantially self ably support the frame upon the spring. One sealing against entry of air, means is provided of the diihculties encountered in the lubrication to prevent the possibility of any air-blocking such i5 of many shackles of this type is the normal as might retard or oppose the desired ilow oi 70 tendency of the lubricant at least at one of the oil. bearings to flow away' or escape from between The invention may be more fully understood those parts of the surfaces that sustain the load. from vthe following description in vconnection An object of the present invention is so to with the accompanying drawings, wherein:

2o construct the shackle and so to connect it with Fig.` 1 is a view mainly in vertical section 75 respect to the load and support that each swivel through one of my improved shackles, showing' bearing is loaded at the side towards which oil the same in operative position between a-chassis normally tends to flow by gravity and the probframe and its spring. i lem of shackle lubrication is reduced to the com- Fig. 2 is a view mainly in vertical. section y paratively simple one of getting lubricant to the through the shackle and associated partstaken 80 bearings rather than keeping it on surfaces from approximatelyat right angles to Fig. 1.

which it naturally tends to escape, 1 Fig.3, is a fragmentary View in transverse Other objects are to accomplish this result section on the line 3-3 of Fig. 2'. i without resorting to the use of complex construc- Fig. 4 is a vertical sectional view through'the 3o tion or accessory oil iittings, and without sacrilower end of a modified form of shackle.' Y 85 icing ruggedness, compactness, strength or duralFig. 5 is a view partly in section and `partly bility. t in elevation of the lower end of Va shackle exem- Another object is to provide a shackle of this plifyingafurther modification. character capable or" lubrication by hand oiling Fig. 6 is a view mainly in side elevation but or otherwise and well adapted for use in conpartly in section 'of a type of'shackle employ- 90 junction with a centralized chassis lubricating ing tapered bearings, and Vshowing the shackle system of either the intermittent shot type or in applied position.v the continuous slow feed type. Fig. '7 is a view mainly in vertical section in a preferred embodiment of the invention 'through' the shackle of Fig. 6 and-its associated D each shackle includes two spaced swivel bearings, parts.

each bearing consisting of complementary inner Fig-.8 is a side elevational view of this shackle and outer (male and female) relatively rotating showing the side opposite to the side shown in bearing parts. The bearings are so connected to Fig. 6. l the load and load support that the weight of Fig. 9 is a View similar to Fig. '1 but showing 5 the load is transmitted to the support through a further modiiication. f 100 the under surfaces of the bearings toward which Fig. 10 is a transverse sectional detail on the oil normally tends to flow by gravity. Y line 10-10 of Fig. 9.

Such connection may be readily eeeted re- Figs. 11 and 12 are longitudinal sectional degardless or" the nature of the bearings by xedly tails through the lower ends of further modified connecting the inner element of one bearing to types of shackles, and f 105 the load, and its outer element to the rigid struc- Fig. 13 is a View similar to Fig. 9 but showing iure or" the shackle and :fixedly connecting still another modification. the outer element of the other bearing to the Referring rst to Figs. 1 to 3 of the drawings, support and is complementary inner element to the reference numeral 10 designates the rear end the rigid structure part ci the shackle. of a channelled chassis frame` bar, having a 110 kfaces of'horn 11. Ycornpl'ementary outer bearing elements for bolt 13,'receiving the projecting ends of such bolt.' The extremitiesoi the bolt 13 are preferably horn or extension 11 transversely bored at 12 for the reception of the upper pivot bolt 13 of the shackle. This bolt is connected by parallel rigid links 14, 14 with the lower bolt 15 which extends through a suitable eye 16 in the end of the supporting leaf spring 17 of the vehicle. Thelinks A14 are providedwith upper eyes 18 to receive the upper pivot bolt 13 and with lower eyes 19 to receive the lower pivot 15.

In accordance with the principles of the present invention, the load, in this case represented by member is fixed to the upper bolt v13 and the lower bolt is turnable relatively to the support or spring eye 16. To accomplish this, bolt 13 is keyed against rotation in bore 12 by a wedgeV pin 21 driven through a ytransverse passageway in the horn 11 and wedging against' a transverse iiat 22 in the lower side of bolt 13 at the intermediate portion of the latter. The lower bolt l5 is turnable in a bushing member 23 force fitted 'intothe spring eye 16.

Bushings 24 force fitted in the link eyes 18 include flanged-over ends abuttingthe at side These bushings serve as the threaded anda'pertured for the reception of lock nuts 25and associated lockpins 26; Lower bolt 15' is held'against turning within the link eyes 19 by the use of a head 27 flattened at 28 to iit a corresponding shoulder in the outer face of one link 14. .The other endof bolt y15 is secured by lock nut 29 and crosspinBO corresponding to the securing meansfor the ends of the bolt 13.l

From the foregoing it will be seen that the lower or under side of each swivel bearing is the loaded side thereof.` Bolt 13- rigidly fixed to the loadVV transmits the ,weight .thereof through f -its under side to the lower parts of `bushings 24.

'I'hese lbushings being rigid-relative to linksV 14 and bolt'15 the load is transmitted throughthe lower side of bolt 15 to the lower part of bushing Thus at both the upperl and lower swivell bearings, oilapplied between the bearing surfaces will tend to gravitate toward the v.lower sides thereof, that is, to the place where itisv required.

In consequence itis merely necessary to--supply adequate lubricant between surfaces of the bolts and their complementary bushings to insure proper lubrication thereof without'danger of dry spots at the loaded bearing areas such as might occur due to normal gravityi'low'werethe upper side of the bearing loaded. f The presentishackl'e might be hand oiled 'or j lubricatedv from-a grease cup'but it is preferably designed for oiling from a centralized-lubricating system. With this in view, a dead end oil yinlet passageway 3.1 extending transversely of'horn 11 has a socket 32 into which a drip plug 33 such as thatdisclosed in myprior Patent No. 1,632,772

elated. June 14', 1927 niay be applied". This drip plug is coupled to-and fed from a conduit 34 forming part of a centralized pressure-distributing system. -v

" bea-rings 13-24.

the space 68 between the bolt ends.

To supply the lower swivel bearings 15-23,`

one of the bushings 24 is also formed with an external annular groove 40, concentric with groove 39 and communicating therewith through overlow ports 41. A longitudinal oil passageway 42 vin corresponding link 14 connects groove 40 with radial passageway 43 in lower bolt 15. Passageway 43 leads to a longitudinal closed end bore 44 in the bolt 15 whence oil escapes laterally through radial ports 45 and iiows into an annular groove or channel 46 encircling the bolt 15 and lubricates the lower swivel bearing.

Thus as oil owsinto passageway 31, both upper and lower swivel bearings will be lubricated by gravity drainage, the lower bearing being sup plied by overiiow from the upper one. Oil iiows through port 35, filling bore 36, rising in ports 33 and spilling over into grooves 39 to oil the upper bearings. Overflow from one channel 38 escapes through ports 41 draining through groove 40' and passageways 42 and 43 into bore 44 whence Y `links 114 are connected by a bolt 5G passing through the aligned bores 51 and 52Y in the stud bolts 47 and secured by lock nut 53. The rounded head 54 of this bolt lits into a counter-sunk'. `recess. 55 in the outer face or" the right-hand link.

Bore 52 is slightly larger in` diameter than the bolt 50, providing an annular oil iiow passageway 56 from which oil flows through notches 57 in the shoulder. 49 to lubricate the bearing jj surfaces between bushing 23' and stud bolts "47.

The construction of the upper end ci this bolt may be similar to that of Figs. 1 to 3, overflowing oil from the upper bearing draining through passageway 58 in the link 114 to the oil space56.

Here again the outer bearing element, i. e., the bushing 23 is fixed to the support, and the inner bearing elements, i. e., the stud bolts are fixed to the shackle links, so that the load is sustained on the under side of the bearing.

Fig. 5 shows another modication in which shackle links 214 carry integral stud bolts 6'3 entering the bushing of: spring eye 16. The link ends extend below the bolts and at their extremities are'apertu'red' to receive a connecting bolt 6l having a head 62 at one end and a lock nut 63 screwed onto its opposite threaded end. A spacer sleeve 64 encircles bolt 61 between the links, and

shirns 65 are interposed between one endoi this iso sleeve and the face of the adjacent link 214. The -'i ends of stud bolts 60 are spaced apart and an oil4 effected so that oil tends toI drain to the loaded areasV thereof.

Figs. 6 to 8 inclusive illustrate another type of shackle embodying the invention and using Ytapered or conical bearings, self adjusting for wear, in place of the cylindrical bearings shown Here again :Ef

inFigs. I to 5. Here the upper shackle bolt 69 l5@ is of hollow pressed steel construction including a cylindrical intermediate portion drive iitted or otherwise xedin a transverse bore in the end of chassis frame bar 71 and tapered ends 72 entering tapered sockets 73 in the upper ends.

of the shackle links 74. These links are connected at their intermediate portions. by cross bolt 75 and at their lower ends are formed with integral, inwardly presented, tapering stud bolts 76 entering the tapered endsy of bushing 77 force fitted into spring eye 78. f

The bushings 77 are externally cylindrical with their inner ends clamping a gasket 79v of gasket material between them and theirL outer ends flanged at 80 for reinforcement of the internal taper bearing surfaces, such reinforcing flanges being backed against 'the ends ofspring eye 78 to resist outward belling or fiaringunder the inuence of the stud bolts.

Means is associated with the connecting bolt 75 to exert an inward compression on the links 74, tending to draw them together and maintain a close t at the taper bearings as wear occurs. The threaded'end of bolt 75 passes through a suitable aperture in link 74and receives a lock nut 81. The other enlarged end 75ad passes with some clearance through aperture 82 in the other shackle link. A strong tensioning washer 83 is interposed between the outer face of this link and head 84 at the enlarged bolt end 759.

Thus in operation the tapered swivel bearings are always kept tight so that substantially no oil can escape from between them. The desirable conditions of eccentric under side loading of the bearings is attained. The inner bearing elements 72 of the upper bearings are fixed to load 71. The outer bearing elements 73 thereof are fixed relatively to the shackle link 74 and the load is at the under side of the bearing. At the lower swivel bearing the load supporting member 78 Ais fixed relatively the outer bearing elements 77 while the inner bearing elements 76 are fixed to the links, again assuring loading of the bearing at the side toward which lubricant normally tends to flow by gravity.

While other oiling systems mght be employed I have shown this shackle equipped for lubrication from a central supply system. With this in view a drip plug 85 controlling flow from supply line 86 :'s screwed into the outer end of a diagonal passageway 87 in the frame '71. Passageway 87 vterminates at-the bore 70 and delivers through a slot 88 in bolt 69 to the hollow interior thereof oil running out through the open ends of the bolt into sockets 73 to lubricate the upper swivel joints 72-73. An angular passageway 89 drilled from the extremities of one of the links 74 has its ends plugged at 90 and conveys oil from an upper socket 73 into a longitudinal bore 95 in a lower stud bolt 78 from which the oil spills into the interior of bushings 77 and drains by gravity to the loaded surfaces oi lower swivel bearings 76-77. The stud bolts 76 may be formed with external spiral grooves 91 to facilitate their lubrication. In order to prevent air blocking, the space betueen the stud bolts is vented, this vent preferably being through the stud bolt opposite the oil delvering one. It consists of a longitudinal bore 92 in the stud bolt extending from the inner end thereof to a vertical passageway 93 Vin the corresponding link. Passageway 93 is plugged at 94 at its lower end and vents through its topinto the clearance space between boltend 75 and the surrounding walls of aperture 82.

The form of invention shown in Figs. 9 and 10 is similar to that of Figs. 6 to 8 save fory the lower bushing construction and venting arrangement.

Here a one piece bushing 95 is force f tted into spring eye 88 and its interioraliy tapered ends are backed throughout by the eye proper. Venting is accomplished by the provision of .a radial port 98 inthe top of the bushing communicating with an external annular groove 99 therein which vents eye 88.

Fig. 11 shows a bushing structure exactly similar to that of Figs. 6 to 8 except that the venting arrangement of Figs. 9 and 10 is'us'ed in one of the bushing sections; Reference characters corresponding to those ofFigs. 6 to 8 and 9 and 19 have therefore been applied. f

F'g. 12 illustrates a 'more radical structural variation retaining the loading principle of the vtlfircughthe usual gap 100 (Fig. l0) in the spring invention. Here a pair ofY steel bushing cups 101 Y have their cylindrical bottoms force fitted into the ends of spring eye '88,` their flaring conical mouths 102 receiving stud bolts 108 integral with the shackle links 104. Lubricant from the upper bearing (not shown) drans through vertical passageways 105 in the links and through longitudinalbores 106 in the stud bolts into bushing cups f 101 and drains 'to the under loaded sides of bear-` ings lim- 103. To prevent air blocking, openings 197 in the cup bottoms permit the air'to escape Y v into the space between the cup which communicates freely with the spring eye gap 100.

In Fig. 18 is illustrated a shackle embodying the invention and using sphericalbearings at one swvel joint and cylindrical bearings at the" other. Means is provided for taking up wear at the spherical bearings without resultant cantin'g or injury to the cylindrical bearings. 1

Here the links include relatively l'ght upper ends 198 formed with receiving sockets 109 for `rounded ends 111 of hollow pressed bolt 110 force tted into channel frame 71 and receiving lubricant from the passageway 87.

The relatively massive lower ends 112 of the.A

links are formed with cylindrical stud bolts 113 entering a corresponding bushing 114 on spring eye 88. Lubricant flows from yone socket 109 through link bor-e 115 to stud bolt bore 116 and thence between thestud bolt ends onto the surface of bushing 114 lubricating the lower swivel joint.

A headed, link-connect'ng bolt 117 passes with Yconsiderable clearance through the upper swivel bolt 110 and through apertures in the links, this bolt being held againstendwise displacement nut 118. At the top of the more rugged lower ends of the links 108,v and well below the bolt 117 the links are formed with inwardly projecting, aligned, tapering, integral spacer sleeves 119 with shims 120 between them. Wear is taken up on lthe lower swivel bearing by removing one cf these link axes and the upper bolt axis out of perpendicular does not affect thebear'ngs. Clearance at the bolt 117 is adequate to accommodate for all necessary take-up or tensioning adjustments.

Here as is in all of theillustrated forms of the invention the lower Ysides of the swivelbearings sustain the load and permit oil fiow'by gravity to the loaded surfaces.` In every case the load transmitting shackle proper Vis rigidly connected to the outer member of the load swivel joint and to the inner member of the support swivel joint. Similarly the load is always fixed to the inner or male element of its swivel joint while the support is always fixedto` the'outer or female element of its swivel joint or bearing, whereby the desired loading of the bearing is attained.

'Ii'ie shackles shown here are of the compression type but the application of the invention to tension shackles is accomplished by use of theV same relation of load and support andshackle to the respective male and female bearing members.

The manner in which the principles of the present invention are applicable shacklesmay be readily observed by simply viewing the illustrated embodiments of the invention in inverted position, as if 'the frame were hung from the spring and noting that when so considered the desired under side loading is maintained. In viewing ythe illustrated shacklesl in inverted position it will, of coruse, be obvious vthat in some instances the lubricant ducts and inlets would be arranged to permit the oil from the lower bearing to well up therein and `lubricate the upper bearings, as for instance in my prior Patent No. 1,618,122 of February 15, 1927.

It `will be apparent` that considered from its broader aspects, many features of this invention are entirely independent of any special lubricating apparatus or method and of general uti-- ity in various analagous types of structure.

It is to be understood that the invention of the present application as specified in the accompanying claims may be employed in the lubrication of bearings other than chassis bearings, and/or to the lubrication of other chassis bearings than shackle bearings and also may be embricate both bearings, and the bearings being so arranged relatively to the coupling member the load and the -support that'the under side of each bearing is the loaded side thereof, both of 'said swivel connections including inner and outer bearing elements, the outer elements of the swivel connection to the load embracing the outer ends of the inner element and the inner element being rigidly connected to the support between said outer bearing elements.

2. A load transmitting member adapted to couple' a load to its support in such al manner that the load and support are bodily movable relatively to' each other, said load transmitting member being swivelly connected at :spaced points to the load and supportrespectively with the axes of both swivel bearings in substantially horizontal planes, the` swivel connectionito' the to tension load beingsubstantially above the swivel coner ends of the inner element and theinner eley ment being rigidly connected to the support between said outer bearing elements.

3. A load transmitting member adapted to couple aload to its support in such a manner that theload'and support are bodily movable relatively to each other, said load transmitting mem- -b'er being swivelly connected at spaced points to the load and support respectively;` each bearing `sustaining the load principally on one side thereof,` the lubricating means being so designed and Ytl'iexbearings being so arranged and lubricated t'natrthe preferential tendency of the lubricant is to flow toward the loaded portion of each bearing rather than toward the unloaded portions thereof, said swivel connections'being each provided with inner and outer swivel elements and being positioned vertically above eachother, said load transmitting member including. the outer elements of the upper connection and the inner element of the lower connection.

4. A device of the class described comprising `a load transmitting portion adapted for interposition between and for. swivelled connection at spaced points with a load and support respectively, said swivelled kconnections being made at two spacedpoints to the load and at onelor .two points to thev support, each swivel bearing including nialeiand female members cooperatively providingbearing surfaces, the load being fixed relatively to the male element of one bearing and the support being fixed relatively to the female portion ofthe other bearing.

5; A device of the class described comprising a load transmitting portion adapted for'interposition between and for swivelled connection at spaced points withy a load and support respectively, each swivelV bearing including male and female members cooperatively providing bearing surfaces, the load being fixed relatively to the male element of one bearing and the support being fixed relatively to the female portion of the other bearing, means to lubricate the bearings including a lubricant duct discharging into the male element of the bearing which is xed tothe load to feed the bearing of sain male element and 'means to convey overflow from such bearing. to

the' bearing which is associated with the support. 6. A device of the class described comprising a load transmitting portion adapted for inter- L positionbetween and for swivelled connection at spaced points with a load and support respectively, each swivel bearing including male and female members cooperatively providing bearing surfaces, the load being fixed relatively to theY male element of one bearing and the support being xed relatively to the female portion of the other bearing, the other elements of said bearings being xed relatively to the load transmitting portion of said device, said bearings being so positioned as to put said load transmitting portion under compression.

'7. A device of the class described comprising a load transmitting portion adapted for interposition between and for swivelled connection at lili spaced points at different levels .with a load and support respectively, each swivel bearing including male and female members cooperatively 'providing bearing surfaces, the load being xed relatively to the male element of one bearing and the support being xed relatively to the female portion of the other bearing, the male elements'cornl load transmitting portion adapted for interposi-` tion between and for swivelled connection at spaced points with a load and support respectively, each swivel bearing including male and-female,v

members cooperatively providing bearing surfaces, the load being fixed relatively to the male element of one bearing and the supportbeing fixed relatively to the female portion of the other bearing, the male elements comprising bolts and the female elements comprising sleeves encircling the bolts, the load swivel bearing being provided with a plurality of female elements andwith a single male element. l i

9. A spring shackle including a pair of links, male and female cooperating bearing elements deiining bearings adaptedv to swivelly connect the links to a supporting spring and a` load. respectively, the links being iixed relatively to the Vfemale elements of one bearingand the maleelement of the other, said links with said male elementJ formingV a rigid U-shaped member, the female elements being formed by openings in the ends of said links removedV from` *theV base of said Uf l0. A spring shackle including a load transmitting portion, male and female bearingelements denning bearings adapted to swivelly` connect the load transmitting portion to a supporting spring and a load respectively, the load transmitting portion being iixed relatively tothe female element of one bearing and the male element'of the other, the `female element of the upper bearing and the male element of the lower bearing being rigidv with the load transmitting portion.

ll. A spring shackle for sustaining the load 'oil spaced points to the frame and spring respectively and also at laterally spaced points tosaid frame, each swivel bearing including'a bushing and a pin, the bearing which connects the load transmitting element tothe frame having` its bushing xed to the load transmitting element and its pin fixed to the frame. .y

l2. A vertical U-shaped spring shackle element including a rigid load transmitting unit adapted.` for swivelled connection at spaced points to alo'ad and to a support and also at laterally ,spaced points to said load, the shackle having a male-V bearing element rigid therewith forming the bot-y and adapted for reception in a bushing. fixed in in a load support.

the spring, and .bushinggmeans rigid withthe other ends of the links and adapted toreceive a bolt xed to the frame. y

, le. A load transmitting spring adapted-toA movablyrconnect a vehicle `frame toa supporting f spring, the shackle including apair ofy spaced links, a bolt connecting and rigidwiththe links` at oneend'and adapted for. receptionv in a bushing fixed in the spring, bushing Vmeansrigid withv theother ends of the links and adapted to re-` Ceivev a bolt xed tothe frame, means to lubricatethe shackle including an oil inlet in the framev feeding into the interior of the Viixed frame bolt,

means to lubricate the bushings of said bolt from the interior thereof and means to oil `the other. boltrand bushing by overow. from fixed frame bolt bearing.V

l5. In vehicle construction, a frame and asup-W pcrting spring, L a 4bolt having its lintermediate portion fixed in the frame and its ends projecting therebeyond, a shackle including links each having a bushing nxed in one endfor coactionwith the projecting-ends ofthe bolt, a second bolt rigidly connecting the opposite ends of the linkand an eye at the end of the spring having a bushing xed therein forethe reception of said` second mentioned bolt.

y16. In vehicle-construction, a frame and asup-A porting' spring, a bolt havingits intermediate portion fixed'inthe frame and its ends projecting therebeyond, a shackle including links each having a bushing n xed inone end for coaction with the projecting Vends of the bolt, a. second b olt rigidly connecting the opposite ends of the link,:

an eye at the endxof the spring having va bushing fixed therein for thereception of saidrsecy ondmentioned bolt each of the bolts having intei'nal'rlubricantducts therein, means for 'conveying lubricantfrom saidducts to the bearing portions of the bolts, means to supply lubricant to the interior of one bolt and meansjincluding a passagewayin one of 'the links tosupplythe in-. teriorl of the othervrbolt by over-flow-,from thev first one. v e

.117.Inha springnshackle a pair of links connectedV atvtheir lower ends with a bolt'for swivelled connection at one end with a load supportand V at their upper endshaving bushingstherein for coaction with a bolt fixed tothe load. 4

y2.8. A shackle including spaced rigid links swivelly .connected kat their upper endsrto a load and a bolt rigidwith the lower ends of the links lQQA vvshackle including spaced rigid links swivelly connected. bysockets formed on the in teriorfopposite faces thereof at oneend to allorad and-inch'iding integral stud bolt portions at theirother ends adapted to entera suitablebushing .20. shackle including spaced rigid links swivelly connected by sockets formed onthein-` terior `opposite faces thereof at rone end toa load andincluding integral stud bolt portions Aat their other ends adaptedv to entera suitable bushing in.Y a load support and the stud bolts beinghollow and a linkY connecting bolt passed through them.

the,

.and adapted to enter a bushing in a load support.A n

2l. A .shackle including spaced rigidk links swivelly connected by sockets formed on the Ainterior opposite faces thereof at one end to a load and including integral stud. bolt :portions at their other ends adapted to enter. a suitable bushingv in `a load support, shims` between the abutting endscf the stud bolt and adjustable meansftV Ahold the stud Vbolt/ends against the shims. v .2 22. A spring'shackleincluding a pair oef links,

tietlie links together including a tie boltvcon-V nectingthem adjacent the spring eye swivel 24. A spring shackle'including a pair'of links,

swivell'y'connected by sockets formed on the interior opposite faces thereof 'to a vehicle frame, stud bolts on the links adapted to enter a bushing in the eye of a vehicle spring,v and means to tie' the links together including a tie bolt connectingv them adjacent the spring eye swivel joint, saidtie bolt being arranged externally of thespring eye'andhaving adjustable wear means associated therewith, l 25. A` spring shackle connecting the links to loadnndload support respectively, the swivel l joint at the load support including male elements fixed to the links and a female element fixed :to the support, the swivel joint at the load including afmale bearing means xed to load, a complementary female bearing meanslxed to the links,

lone swivel joint having spherical bearings vand theother swivel joint having cylindrical bearings an'dfme'ans'lto*take-up wear at the cylindrical bearing while maintaining in operative relation.

'i --26.` A vspring shackle connecting the links to a load and Yload support respectively; the swivel jont"`at the vload support 'including male elements fixed to the links and a female element xed to `the` support, thesw'ivel joint at theloadincludin'g Va male bearing means fixed to load, a

com'plementary female bearing meansiiked' to theilinks, one'swivel joint having spherical'bearings andthe 'other swivel joint havingv Vcylindrical bearings, and the cylindrical bearing includ- .ling stud bolts fixed tothe links and entering'a bnshinginthe support, anclay tie bolt connecting tli'elinks. f

, V27; A" spring shackle connecting` the links to a load Vand load support respectively, the swivel 'joint atthe'loadsupport including male elements fixed tothe links and a female element fixed to the support, theswivel joint at the load including a male bearing means fixedto load; a complementary female, bearing means fixed to the links,

one swivel joint -having spherical bearings the" other swivel joint having cylindricalfbearings, andthe cylindrical jbearingincluding stud bolts fixed to the links and entering'a bushing in the support, a tie bolt connecting the links, the

links being so constructed that whenthe tie b olt is tightened t take up wear on'the cylindrical bearings' the cupped ends of the links at the spherical'b'earings will remain in effective bear.'`

ing relation"withf'the spherical bolt ends, the

corresponding lengths of links'flexing yfor this purpose.

v`2,8. In a motor vehicle havinga chassis frame with an inverted l'- rigid therewith, a Vsupporting` springwitha'terminal eye4 parallelto the y cross'member o f said T `arid'aU-shaped shackle bearing Within said eye at itsbottom and atthe ends of the'ecrorss member of the'T *at itstopy a lubricating Linstallation comprisiiigmeans to aclmit lubricant to thehoriaontal portion' of the Tand lubricant conduit means through the side the spherical bearing and bottorril ofthe U-shaped shackle, the lubricant passing Aacross the bearing surface between thetopof the uesjhapedshackle and the' end of the T. e

29.'In a motor vehicle having a chassis frame with an inverted T rigid therewith, a supporting spring'with a terminal: 'eye parallel vtothe cross member of said -T and a U-shaped shackle bearing withinsaid eye at itsbottom and at the ends ofthe cross member of the T at its top; a lubricating installation comprising means to admit lubricant to the horizontal portion of the T and lubricant conduit meansthrough the side and bottom Vof the U-shaped shackle, the lubricant passing acrossthe bearing 'surface' between the top'of the `U-shaped shackle and the endv of the T, the' U-shaped shackle Vbeing split .andthe split portions of the bottom thereof being held together within the ends ofthespring eye.

B0.` In a motor vehicle having a chassis frame with an inverted T rigid therewith, a supporting spring with a Vterminal eye parallel to the cross member of said T randl aU-shaped shacklebearing withinsaid'eye at its bottom 'and at the ends of thc"cross"member ofthe T at itstop; a lubricating installation comprisingV means tto' admit lubricant to thehorizontal portion of the T and lubricant conduit means through the` side and bottom of the U-sh'aped shackle, the lubricant passing across thebearing surface between the top of they-shaped shackle and the end of theT, the'interior sides of the Uf-shapedshackle adjacent the ends ofitsflegs'being provided'with sock'- etsjwhich fit upon andgkencircle the ends ofthe cross `member of: said T, saidvr lubricant passing i from said T cross 'member across said bearing into said, were. e

'31, In'ametor vehiclehav'ingua chassis frame with aninverted T rigid' therewith. a supporting springwithfy'a terminal eye Aparallelto thecross member of "said Tand la U -shapedshackle bear- 'v ingfwithin said eyejat its bottomand at the ends of the crossmembelff` the T at its top; a lubrieating' -inst all'atio1 i I' comprising means` v.to admit lubricant tothe horizontal portion of the T and. lubricant-conduit means through thel side andv bottonil of.v the U-sliaped shackleg. the lubricant' passing across thebearing surface kbetween the tgp of the lU-sllaped shackle land the end of the'T, the U+shaped shacklebeing split'at itsbottomand the split UfshapedY shackle being heldy together by ajtranSYellSfe bolt parallel'to the bottom'of the Eiland passing throughthe sides ofthexll. t

32- 111; a, milio? Vehlihavns a Chassis frame with; aninvertedT rigid` therewith, a Supporting springj'with a terminal eye parallel to thekcrossvv member ofsaid T and a U-shaped shackle bearing withinlsaideye at its bottomeand at the ends of the cross memberof the T at its top; a lubri- Yeating installation comprising means to admit L11V` lubricant to thehorizontalportion ofthe T and lubricant v4conduitjmeans through'the side and bottom of the U-shaped shackle, the lubricant passing across the bearing surface between the top of the U-shapedshackleand the end of the T, the U-shapedsha'ckle being' split at itsbottom and the split U-shaped'shackle being held to gether by a transverse :bolt parallel to the 'bottom ofthe U and passing through thesidesof the U between'thecross member of the T andthe bottonrof the YU-shaped shackle. l j

A33. Inra 'motor vehicle having a chassis frame with an invertedlT rigid' therewith, a supporting spring with a terminal eye parallel to the lcross member of said T and a U-shaped shackle bearisc lad

ing Within said eye at its bottom and at the ends of the cross member of the T at its top; a lubricating installation comprising means to admit lubricant to the horizontal portion of the T and lubricant conduit means through the side and bottom of the U-shaped shackle, the lubricant passing across the bearing surface between the top of the U-shaped shackle and the end of the T, the U-shaped shackle being split at its bottom and the split U-shaped shackle being held together by a transverse bolt parallel to the bottom of the U and the sides of said U having extensions below the bottom of the U through which said transverse bolt passes.

34. In a motor vehicle having a chassis frame with an inverted T rigid therewith, a supporting spring with a terminal eye parallel to the cross member of said T and a U-shaped shackle bearing within said eye at its bottom and at the ends of the cross member of the T at its top; a lubricating installation comprising means to admit.

lubricant to the horizontal portion of the T and lubricant conduit means through the side and bottom of the U-shaped shackle, the lubricant j passing across the bearing surface between the top of the U-shaped shackle and the end of the T,

the ends of the cross member of the T being made of hemispherical shape and the interior sides of the legs of the U-shaped shackle being provided with hemispherical sockets to bear upon the ends of the cross member of the T.

35. In a motor vehicle having Va chassis frame with an inverted T rigid therewith, a supporting spring with a terminal eye parallel to the cross member of said T and a U-shaped shackle bearing within said eye at its bottom and at the ends or" the cross 'member of the T at'its top; a lubricating installation comprising means to admit lubricant to the horizontal portion of the T- and lubricant conduit means through the side and bottom `of the U-shaped shackle, the lubricant passing across the bearing surface between the top of the U-shaped shackle and the end of the T, the horizontal portion of the T and the bottom of thev U-shaped shackle being provided with parallel axial lubricant passages and one of the sides of the U-shaped shackle being provided with a bore to permit ow of lubricant from the axial passageway in the horizontal T portion to the axial passageway in the bottom of the U- shaped shackle. l wf( JOSEPH BIJUR.

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